Roller bearing pedestal truck



Nov. 10, 1936. w. c. SANDERS 2,060,446

ROLLER BEARING PEDESTAL TRUCK Filed Dec. 26, 1934 2 Sheets-Sheet 1 /N VENTOP.

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Patented Nov. 10, 1936 UNITED STATES 2,060,446 ROLLER BEARING PEDESTAL raven Walter C. Sanders, Canton, Ohio, assignor to The Timken Roller Bearing Company,

Canton,

Ohio, a corporation of Ohio Application December 26, 1934, Serial No. 759,182

3 Claims. (01. 105-218) The pedestal jaws of a standard railway truck are adapted for cooperation with plain bearing boxes but are too narrow to accommodate roller 10 guide plates welded to the pedestal horns and.

spaced far enough apart to receive journal bearing boxes that are adapted for use with roller bearings.

In the accompanying drawings, wherein like 15 symbols refer to like parts wherever they occur,

Fig. l is a view of the pedestal portion of a :tandard truck side frame, partlyin elevation incl partly in vertical section;

Fig. 2 is'a similar view with portions of a 20 pedestal horn removed and replaced with strengthening members in accordance with my invention;

Fig. 3 is ahorizontal cross-section of a standard pedestal horn on the line 3-3 in'Fig. 1;

'5 Fig. 4 is a horizontal sectional view of such pedestal horn modified in accordance with my invention, the section being taken on the line 4-4 in Fig, 2;

Fig. 5 is' a view partly in plan and partly in, 5 a horizontal section of the end portion of a roller-'- bearing-equipped axle mounted in my modified pedestal jaw;

Fig. 6 is a vertical-cross-sectional view on the line 6-6 of Fig. 5, showing a roller-bearingequipped axle mounted in my modified pedestal jaw; and

Fig. 7 i", a. view partly in elevation and partly in vertical section of a separable standard pedes-' tal modified in accordance with my invention. 1

4o The jaw or space between the horns of a standard railway truck pedestal is designed to accommodate the journal box of a plain bearing, which journal box is much smaller than is required to accommodate a roller bearing. Heretofore,

a when it has been desired to replace plain'bearings with roller bearings, it has been necessary to use roller bearingsof smaller size than desirable or to cut down the diameter of the axle to the minimum that is permissible or to slab off the 50 sides of the bearing cups or otherwise sacrifice something in order to get within the space limitations of the standard pedestal.

According to the'present invention, the jaw distance between the horns of the pedestal is ll widened out by removing the lower parts of the uide face portions A of the horns of the pedestal. As the pedestal horns are weakened by the removal of the" guide face portions thereof, reinforcing members B are welded to the remaining portions of the horns to restore the same to their original strength.

In a standard design, the pedestal horn I is of channel-shape in cross-section, as indicated in Fig. 3, and is integral with the side frame 2 of the truck.-- According .to my invention, the entire 10 web 3 of the channel or pedestal jaw and adjacent parts of the flanges or sides 4 thereof are cutaway and replaced with a channel-shaped reinforcing member B welded to said sides, the web of. the reinforcing member being wide enough to straddle the front and back side members 4 of the pedestal horn. This channelshaped reinforcing member B isdisposed with its flanges overlapping the front and back side' members of the pedestal horn and with its web welded to the flange members of said hom, as indicated at 6. A suitable wear plate or liner 1 is welded or otherwise secured to the guide face of each of the reinforcing members.

The distance between the liners of the guide I faces of the pedestal horns, modified as above described, is sufiicient to accommodate the end of the housing 8 of a full-size roller bearing 9 together with wear plates Ill welded thereon, as indicated at II.' It is this distance that determines how far back the front and back sides of the pedestal horns shall be cut back. -As stated above, it is the lower parts of the guide face portions of the pedestal horns that are cut away, the uppermost parts thereof being left intact in order not'to affect the strength of the side frame. Thus, the upper part I2 of the pedestal jaw main- 'tains its original width and, for this reason, the

upper part l3 of the end of the roller bearing housing is offset inwardly to enable it, with the 40 wear plates thereon, to fit slidably in the original jaw with its wearplates l4. Likewise, instead of making a single straight out, it is preferable to offset the lowermost and by an amount equal'to the thickness of the reinforcing plate so as to preserve more of the original bottom flange of the pedestal horn and afford a seat for the lower edge of the reinforcing member.

In consequence of the modification of the-pedestal horns, as above described, it becomes feasible to equip with roller bearings standard trucks that were designed for plain bearings, as will be ap--- parent from Fig. 6, wherein the housing of the roller bearing is much wider than the original Jaw OI the standard pedestal and wherein the axle 5 and the roller bearing are of full sizes that are determined by the functions they perform and not by the dimensions of the standard truck.

What I claim is:

1. A car truck having offset pedestal horns, the distance between the upper portions of said pedestal horns being of standard dimension to recive the housing of a plain bearing and the distance between the lower portions thereof being sufficient to receive the end of a housing of a fullsize roller bearing, and a roller bearing housing slidably mounted in said pedestal with its lower portions fitting btween the lower portion of the pedestal and with its upper portion ofisetto fit between the upper portions of said pedestal.

2. A car truck having offset pedestal horns, the distance between the upper portions of said pedestal horns being of standard dimension to receive the housing of a plain bearing and the distance between the lower portions thereof being suflicient to receive the end of a housing of a fullsize roller bearing, and a roller bearing housing slidably mounted in said pedestal with its lower ing side flanges whose upper portions are connected by integral guide webs that are spaced apart far enough to receive a, plain bearing housing of standard width, separate guide webs connecting said flanges below said first mentioned guide webs and spaced at greater distance apart .to acommodate a housing of a full size roller bearing, and a roller bearing housing slidably mounted in said pedestal with its lower portion fitting between the guide webs securedto thelower portions of said flanges and with its upper portion ofiset to flt between the webs integral with the upper portions of said flanges.

WALTER C. SANDERS. 

